Home / 421,398.24-631,965.60-140,849.88

Finding the Fourth Proportional to 421,398.24, 631,965.60 and 140,849.88

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Solution

The fourth proportional to 421,398.24, 631,965.60 and 140,849.88 is: 211,230.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,398.24 : 631,965.60 = 140,849.88 : x
  2. Step 2: Convert to fraction form
    421,398.24/631,965.60 = 140,849.88/x
  3. Step 3: Cross multiply
    421,398.24x = 631,965.60 × 140,849.88
  4. Step 4: Simplify right side
    421,398.24x = 89,012,278,924.13
  5. Step 5: Solve for x
    x = 89,012,278,924.13/421,398.24
  6. Step 6: Final answer
    x = 211,230.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.